Milking-machine.



A. V. L R. L. HNMAN.

MIUUNG MACMNE.

Mmm/mou mia ocr. |914.

Patonted May14, 1918.

2 SHEESWSHEET 1 A. V. R. L. HINMAN.

MILKING NMCHINEy APPLICATIGN HUE. 'OCT b` WIL 1,265,914. mmm May 1 1, uns.

UNITED STATES PATENT OFFICE.

ARTHUR V. HINMAN AND RALPH L. HINMAN, 0F ONEIDA, NEW YORK.

MILKING-MACHINE.

Specication of Letters Patent.

Patented Ma y 14, 19] 8.

Application tiled October G, 1914. Serial No. 885,319.

To all whom it may concern:

Be it known that we, ARTI-1mi V. HINMAN and Racen L. HINMAN, citizens of the United States, and residents of Oneida,1r in the county of -Madisom in the State of l\e\v York, have invented new and useful lmprovements in Mi]king-'l\lachines, ofi which the following, taken 'in connection with the accompanying drawings, is a full, clear, und exact description.

This invention relates to certain new and useful improvements in niilkin r machines ot' the class set forth in Letters latent of the United States No. 907,236 and No. 1,097,803, granted to us December '2.2, 1908 and May 26, 1914, respectively, and involves the, use of a valved milk chamber, to the construetion of which this application particularly relates.

The primary object of the invention is to provide un exceedingly simple, readily operated, easily cleaned, noiseless and highly etlcient apparatus for milking one cow or a number of cows simultaneously.

A further object is to construct. and arrange the valved milk chamber in .such a manner that with cach complete cycle ot movement ot the air-exhausting! apparatus. milk will` be drawn into the chamber and substantially completely discharged therefrom, without any ot the, milk entering theV air-exhausting apparatus or its eoinieetions.

Other objects and advantages will appear from the following description, taken in connection with the accompanying drawings, in

Figure 1 is a side elevation of the valved milk' chamber.

Fig. 2 is a vertical cross section of the same.

Fig. 3 is a cross section on line 3-3,

4ig. 4 is a side elevation of a portion of the milk chamber', having` a section broken away to show the preferred form ot milk inlet.

Fig. 5 is a vertical sectional view of the upper portion of the milk chamber illustrating a slightly varied form of exhaust communication and milk inlet.

Fig. G is a view of the milk chamber as semblcd in a complete operable milking apparetus.

The invention comprise a milk chamberand vertically arranged and Yli'ormed of two parts, a body -2- and a cap -l--, said parts having a threaded relation with each other, the lower edge of the cap in this illus'- tration constituting,r the exterior of the milk chamber.

The body E2- is provided with an internally threaded ring -4- adjustable along the. externally threaded portion of the body --':Z-- and adapted to torni in connection 65 with the shoulder or stop formed by the lower edge oiE cap --5 a means tor engaging the top portion of n pail tor the reception of milk. In operation, the ring -l is first adjusted to proper position, the body m2 is thrust upwardly through an opening),` in the top wall ot' the milk receivino rceeptacle or pail, illustrated in dotted lines Fig. l. and the cap r2l is then screwed upon the body -2-- until it contacts with 75 the wall of the pail eorer and tornls a relatively tight connection and a smooth interior surface for the milk chamber -l-.

The milk chamber -1- is provided with a nipple M5 adapted to he connected with S0 a suitable, air-exhaustingdevice, such as the piston pump shown in our latent No. ?:22313 above referred to, by means ot a flexible hose. or tubing Jiand the nipple M5-W may,

is shown in Fig. L. hel formed in connection with or attached to the, rap -Y-l and projecting into the milk ehamber --'lor not, as desired.

The milk chamber -1-- is further provided with a milk inlet comprising, as shown 90 in Fig. 2. a tubular member --7- connected with suitable tent cups, not here illustrated` by means ot' n Vhose or flexible tubing -8-, and the member -7vmay be engaged with, or as shown passed through theY cap --3- and have its lower end e.\'- ternally threaded for engagement. with a defleeting nipple -tlhaving an intel'- nally threaded portion. and the nipple -lis preferably, as shown, form, curved in longitudinal cross section and having its lower end -10 lying in proximity to the inner surface ot the milk chamber and having an opening extending for at least a portion ot its length in sublo:

Stantial parallelism with the inner surface ot the milk chamber -1-, so as to discharge the milk onto this smooth curved in ner surface and thereby give to the milk a rotary a'nd downwardly directed movement 11o a stop or shoulder upon 6o an open ended tube S5 tubular in alone' its outer 1 t* around the chamber, and for this purpose the discharging end of the nipple is preferably deflected slightly downwardly from the horizontal and the milk is projected into the niilkchamber below the plane of termination of tue air-exhanstingr connection, as the tube --5, thereby avoiding the possibility of the milk being drawn into the air-exhausting device or its connections. This relative positioning of the milk inlet and the air-exhausting connections is less reason that with such a motion the milk will tend to cling to and spread out upon the surface of the chamber, leaving the central portion free of milk for the reception and operation of the air-exhausting connections.

lVhen milk is drawn by suction into a chamber such as the milk chamber ul, without the temlency for this rotary motion to slit in, as is the ease with the construction of frnilk inlet illustrated in Fig. 5,

spray as'it enters the chamber, and with the form of inlet illustrat din Fig. 5 it is preferable that the milk discharge into the Chamber below the term'in'us of the air-cX- haust connection.

The lower end of the body 2- and its surface is ground to form an tight seat a suitably ground valve ell, as shown circular in orm and rotarily mounted upon a levi; arm -12-- pivoted at --13- upon a lu or projection l-- extendimglaterally from the body `2`, and the arm -12- is preferably provided `.vith a weight --15- adjustable end and adapted to be held in any desired point of adjustment by means of a set screw --16--, so that the weight. may be adjusted to balance the valve and normally hold the same closed through action of gravity.

The valve `l1-- is provided with a projeetion or boss -17-- havinga stepped pon tion -18-, said boss having an internally threaded seat for the reception of an externally threaded bolt 19 having a washer `2()-- mounted thereon for eontactwith the stepped portion `18- and the inner arm ot' the lever --l2-` which is loosely mounted upon the portion l8r and in contact with the flange .formed on the boss i by said stepped portion m18-. The. engagement of the arm of the lever -12- `and the portion 18- of the lug --17- is such that the valve -l1- is freely rotatable upon said arm and adapted to have an airtight, millrtight engagement with the ground surface of the body `-2--.

lt willbe apparent that the valve --l1-` is normally held in contact with the. body --2-- by gravity through the wei f ht --15- during the exhaust stroke of t e air-exhaustmg device, and that said va'lve -is o cned by the Weight of the milk in the clliamber when the air-exhaustiug device is on its return stroke.

n Fig. 5., we have illustrated a varied form of air-exhausting connection, in that the tube. -5`- is closed except for a very small opening `-21-, from which opening milk Will discharge by gravity should any by chance be drawn into this tube, and the tube, as shown, is provided with a plurality of perforations or openings M22--`- through the side wall ther of so that the air will be drawn into said tube laterally rather than vertically from the milk chamber, thereby decreasing the possibility' of milk being drawn into the air-exhaust connections, and this form of exhaust connection may be used in connection with the. form of milk inlet shown in Figs. 2, 3 and 4, or with the form of milk inlet illustrated in Fig. 5, which comprises a straight tube discharging into the chamber, preferably downwardly as shown, al though it may discharge in any suitable and desirable direction, and the inlet illustrated in Fig. 5 may be used with the form of airexhaust connection shown in Figs. 2 and 3, or with the form shown in Fig. 5. It will be noted that in each ease the milk inlet is a valveless inlet and freely communicates with the milk chamber at a'll times, both 'when milk is being drawn into the milk chamber -1 and when milkv is being Adischarged therefrom, whereby the vacuum .is released during' each cycle of the air-exhausting device upon thefteats of the animal being milked, and the "alte `ll-` or milk outlet is automatically operated by gravity in conjunction `with 1 e weight of the milk in the chamber and the exhaust of air from sai chamber.

It is unnecessary with this construction of milk chamber to make use of a specialail`- tight receptacle in conueetiouwith the apparatus for the final reception of the milk, nor is it necessary to render the receptacle airtight by use of a special cover, as the milk Chamber is rendered air-tight by means of its antomat :ally operated valve l1- and this apparatus may, therefore, be employed with any ordinary receptacle, bein supported in any manner thereon, although the manner heretofore described is preferable.

As shown in Fig. 6, the valve chamber is assembled in a complete operable milking apparatus embodying a long-stroke relatively small-diameter piston pump A connected by fiexible tubing 8* to the niphe piston rod of said pump may be driven in any suitable manner, as by a reclproting bar B to which the pisat its lower end' said wall so that ton is preferably removably connected. The bar l), may. as shown, bc mounted on the stanchiou framework (j. The nipple -5 on the valve chamber is connected by flexible tubing l) to a claw carrying a series of tcat cups E for cugagen'ient with the tents ol a cow. The chamber lis assembled with and secured to the cover of a pail -l*`-- in tln` manner heretofore described so that nipple-z Ti-- and -7- are outside the pail and outlet valve --ll--v is within the pail so that in el'l'cct the milk is discharged through the` pail rover.

Although we have shown and described a particular forni of device as j ireiicrablc, it will be readily apparent that many changes maybe iliade in the forni and arrangement of the parts and in the details of construction and operation, without departingr from the spirit of the invention as set, forth Vin the appended claims.

What we claim is:

l. In a inilkinc machine, a milk chamber having a milk iiilet, 'an air exhaust connection, a milk outlet and a counter-weighted valve for said outlet, said counter-weight adjustable to allow said valve to open under different weights` of milk.

2. In a milking apparatus, an elongated tubular structure having its upper end substantially closed and its lower end open to provide an outlet for milk, and provided at said lower end witha downwardly facing valve seat, an outwardly opening valve for Said outlet, an air exhaust pipe connected to the upper end of said structure, a milk inlet pipe projecting into said structure and terminating at a. point some distance below the termination o the air exhaust )ipe and lying in close proximity to the wall of the chamber and adapted to discharge milk upon it spreads out upon and clings to the wall, leaving a milk-free space in the upper end of the chamber from which air may bc exhausted without substantial entrainment of milk during the partial lling of said structure with milk While' the outlet valve is held in close contact with its seat by the suction in said structure, and a reciprocating pump connected to the air exhaust pipe.

3. A milking apparatus comprising a milk chamber having a milkl inlet, and an opening for the dischargel V`of milk from `the chamber, a valve for sai for allowing said valve t ent weights of milk. i

4. A milking apparatnslcomprising a milk chamber having a milk inlet and an opening for the discharge of milk from the chamber, a valve for said opening, and adjustable gravity-operated means for, normally holding the valve in closed positlon.

5. In a milking apparatus, a milk chamber having an air exhaust tube piercing the "zopen under differopen1ng,and means' upper end of the same and terminating in a substantially closed bottom positioned Within the chamber, said tube provided with a plurality of relatively small openin s through its side wall, a milk inlet to sai chamber, and an outlet adapted to discharge milk into a receptacle at normal atmospheric pressure, a valve for said outlet, said valve positicned outside the chamber and adapted to be held in air-tight relation with said chamber by the exhaust of air therefrom.

6. .1i a milking machine, a tubular milk chamber having a stop upon its outer surface, said chamber comprising two removably connected parts, one of said parts hav- 'ing a ring adjustable longitudinally thereof and adapted to clamp between it and the stop a portion of a milk pail, a milk inlet, f outlet for said a tubular, milk two removably connectparts having a member and adapted to receive other part, a portion of a milk inlet, a valved outlet, and means for exhausting air from saidchamber.

8. In a milking machine, chamber comprising two removably connected parts, one of said arts having a` ring adjustable longitudinally thereof and adapted to receive between it and the other portion of a milk receptacle, valvcd outlet, and means for from said chamber.

9. In a milkingr machine, a tubular milk chamber comprising two removably connected parts, one of said parts having an externally threaded portion, an internally threaded ring engaged with said threaded portion and adjustable longitudinally of said part and adapted to receive between it and the other part, a portion of a milk receptacle, a milk inlet, a valved outlet, and means for exhausting air from said chamber.

10. In a milkin machine, a tubular structureopen at its fewer end to form a milk outlet, a valve for a tubular milk art, a a milk inlet, a

a milk chamexhausting air the discharge of thereof, whereby the valve is relieved ot the Sudden projection and application of the gravity of the milk.

12. In a. pneumatic milking maehinel a cylindrical lnilk-rlmmber having a Suction connection at one end, a milk inlet near Said end in eonneotion with a teat eup, a valved milk outlet at the other end, and means to hringgthe milk into rotary motion in the milk chamber whereby the milk may be kept rotating longl it remains in Said cham ber and means to produee intermittent Sue tion in said milk chamber,

13. in a pneumatic milking CoI'nbination with a tubular milk ehamber having a Suction connection at one end, a milk inlet near Said end in connection with a tout cup. a i'alred milk outlet at the other end, of means to bring the milk into rapid rotary motion in the chamber whereby the milk may be kept rotating as long;r as it remaine in said Chamber and mean` to produce alternately surtiou and pressure, in Said milk chamber and tent -up.

14, in a pneumatic milking machine, a cylindrical milk chamber having milk inlet. and milk outlet, means between said milk inlet and milk outlet to bringr the milk into rapid rotary motion whereby the milk may be kept rotating an long as it remains in the chamber. i

l5. in a pneui'natie milking machine. a` milk Chamber havingV milk inlet and milk outlet. :uid means to keep the milk under centrifugal forro as long as it remaim in Said chamber.

1G. in a milking appa raton, au elongated tubular structure haring itev upper end Subr Stautially closed and its lower end open to provide a milk outlet', and iiuorided at said lower end with a downwardlyv facing valve Seat" a Self-adjusting: normally closed out wardly aningej volw; for Raid outlet. au air exhaust pipe connected to the upper end o said struetnre. a milk inlet pipe adapted to diseharge milk into said Structure at a point Some dist-anne below' the termination of the air exhauet pipe, thereby 'forming a milk free space Jfrom whirh air may be exhausted without Subatantial entrainnu-nt of milk during the partial filling of said Htrueture with milk while the outlet valve is held in close emitart with its oeat'by suction in Said Structure.y and a reciprocating pump oonneeted to the air exhaust pipe.

1T. A milking apparatus consisting; of an elongated tubular Structure having its up machine in per end substantially closed and its lower end open to provide a milk outlet and provided at said lower end with a downwardly facing valve Seat, a self-adjusting normally eloSed outwardly openiuggr valve for Said outlet, an air exhaust pipe. eonueeted to the upper end of raid structure, a milk inletl pipe adapted to discharge milk into said Structure at a point some d'wtaneeY below the tern'iilultion oi the air exhaust pipe, thereby forming: a milk-free space from which air may be exhausted without sub- Stantial entrainment of milk during the partial filling oilsaid structure with milk while the outlet valve is held in clone eontart with its seat by suction in said Iatrueture. teat oups, a flexible hose eonneeting the teat cupa to the inlet pipe so that` the tubular strueture may be positioned at a distance from the animal lnilked and may remain in stationary condition independent of the movement of the teat cups. and a rrriproealiug pump eonneetrd to the air exhaust pipe.

iS. A milking; apparatur, rumbling,"l ol' an elongated tubular otrueture haring ita` up per end substantially rloaed and ital lower end open to provide a milk outlet and provided at said lower end with a donnwardl)Y farine' valve Seat. a Helf-lidjustiug outwardly opening valve for lsaid outlet. a eounlerweighted lever for normally holding said valve in closed position, an air exhaust'. pipi` connected to the upper end of said structure, a milk inlet pipe adapted to discharge milk into said structure at a point Home distanre below the termination of the air exhaust pipe. thereby forming a milk-free spare from whit-h air may be exhausted without snbatantial tntrainnient of milk during the partial fillingr of aid Strut-ture with milk whih` the outlet valve is held in Close ron tart with itA seat by sau-tion in said salerno ture. teat Cups, a tlexihle hose connectingr the teat eups to the inlet pipe, ao that the tubular strut-.ture may be positioned at a dist-alive from the animal milked, and may remain in stationary condition iudeirendent of the morena-utili' the teat eups, and a. reciprocating pump connected to the air exhaust pipe.

ln witness whereof we have hereunto Set our hands this` second day ot' October, 1914-.

A RTHUR V; Hl NM AN. RAll L. lllNMAN.

YW itneeses R. H. Woonviii't1 MARY E. Hancock. 

